Pulley.



7 WILLIAM HUZDDLE, or maivsrInnn,'onIqnssIenon TO THE AULTMAII & TAYLORMACHINERY COMPANY; or MANSFIELD, OHIO, A CORPORATION OF OHIO.

pulley.

PULLEY.

To all whom it may concern:

Be it known that 1, WILLIAM HUB LE,

means of building and constructing pulleys.

The primary object of this invention is to construct a pulley of woodand metal by providing a metal hub which is adapted to carry and retaina series of longitudinal wooden bars to form the periphery of theFurther objects are to provide means of securely clamping a series oflongitudinal wooden bars to a metal hub, thereby forming segmentalportions of the periphery of a pulley and leaving interstices betweenthe bars, which in combination with the wooden surfaces of the barspermits the air to escape and prevents it from forming air cushionsbetween the belt and that portion of the periphery of the pulley withwhich it is in contact; provides maximum working adhesion and closecontact of the belt with the pulley; permits elastic contact of the beltwith the periphery of the pulley and provides a gripping contact betweenthe edges of the bars and belt; said attributes not being common in theconventional type of metal or wood pulley, (especially the smallersizes).

Another object is to provide a method of building a pulley that willretain all the advantages of a wooden pulley and eliminate itsdisadvantages such as warping, expanding and contracting of the wood,which has the effect of throwing the periphery out of true, therebypreventing the proper transmission of power or pressure of the belt uponthe periphery of the pulley.

A furtherobject is to provide means of varying the width of the face anddiameter of the pulley easily, conveniently and rapidly by. aninterchange of the longitudinal wooden bars forming the periphery of thepulley without removing the pulley from the shaft upon which it ismounted.

This invention further obviates the necessity of facing the periphery ofthe pulley I Specification of Letters Patent.

Applieatio'nlfiled June 24,1915; Serial In... saoea' Patented'Feb. 81916.

I attain these and other objects by the mechanism illustrated in theaccompanying V d rawing'in which Figure 1'. is an, end view showing thedetail of the assembly of the pulley; Fig. 2. is a vertical; sideelevation of Fig. 1 on the line showing a part of the periphery omittedandin section to show its construction more clearly.

In the drawing reference numeral 1 represents a hub provided with cuppedshaped annular undercut recesses ,2 and 8 forming sleeve likeprojections and 5. A series of longitudinalradial ridge flangeslfiextend from the periphery of the undercut pro.- jections and the hubformingtapered pockets 7 to receive a series of longitudinal peripheralwooden bars '8 and maintain them spaced apart leaving interstices 9'between, the edges of each unit thereof. The bars are securely clampedin place by the slotted bolts 10 which pass through apertures in eachend of the bars, and by the Inanipulation ofthe nuts 11 draw and retainthe bars snugly within the tapered pockets. Toprovide for truing up theperiphery of the bars as occasion may require, the apertures in the barsare countersunk as shown. The dotted lines 12 and 13 represent differentheights of the longitudinal wooden bars which may be interchanged tovary the diameter of the pullev andthe dotted lines 14 and 15 repre--sent different lengths of the bars which may. interchange to-vary thewidth of the face of hub to form V shaped open pockets, and a series ofplane surface longitudinal bars spaced apart by said flanges and clampedin the pockets thereby forming the periphery of the pulley. V V

2. In a pulley, a metal hub having its ends undercut, said hub alsohaving a series of radial longitudinal flanges extending from theperiphery of the hub to form a seies of plane surface and tapered radialopen I ockets, a series of plane surface longitudia1 Wooden peripheralbars fitted to said pockets in spaced relation with respect to eachother, and fastening means provided on each end of the bars to retainsaid bars in said pockets. A V

3. In a pulley, a hub having its ends cupshaped and also having a seriesof radial plane surface flanges provided on the hub forming openpockets, a series of plane surface longitudinal wooden bars fitted tosaid pockets and held in spaced relation from each other by saidflanges, and means to secure said bars in said pockets.

4. In a pulley a cup-shaped metal hub provided with a series of radialplane surface and open pockets, and a series of plane surfacelongitudinal wooden bars which are inserted in said pockets in spacedrelation from each other to form the periphery of the pulley withinterstices between the wooden bars. I

5. Ihe herein described pulley, comprising a cup-shaped metal hubprovided with a series of plane surface radial pockets, a series ofplane surface longitudinal wooden bars which are inserted in saidpockets to form the periphery of the pulley with interstices between thebars thereby forming a pulley Ofmetal and wood, and a clamping meanswhich afi'ords facilities for interchanging said wooden bars by liftingthem from their respective pockets and replacing them with others tovary the diameter and the face of the pulley without removing the pulleyfrom the shaft upon which it is mounted.

6. In a pulley, constructed of metal and wood, a series ofplanesurfacewooden bars in combination with'a hub having a series ofplane surface open pockets provided upon its'periphery Which are adaptedto receive said series of wooden bars therein; said bars being held in"spaced relation from each Copies of this patent may be obtained forfive cents each, by addressing the Commissioner of Patents.

' Washington, D. C. i

